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                            <b>1.</b>
                        
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                            <b>1.2.</b>
                        
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                            <b>1.3.</b>
                        
                        第2章：列表与图片
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                            <b>1.4.</b>
                        
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                            <b>1.5.</b>
                        
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                            <b>2.</b>
                        
                        CSS简介
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                            <b>2.1.</b>
                        
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                            <b>2.2.</b>
                        
                        第2章：选择器
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                            <b>2.3.</b>
                        
                        第3章：属性选择器
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                            <b>2.4.</b>
                        
                        第4章：伪类选择器
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                            <b>2.5.</b>
                        
                        第5章：盒子模型
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                            <b>2.6.</b>
                        
                        第6章：伪对象选择器
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                            <b>2.7.</b>
                        
                        第7章：font字体与边框
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                            <b>2.8.</b>
                        
                        第8章：行高
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                            <b>2.9.</b>
                        
                        第9章：文字与背景
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                            <b>2.10.</b>
                        
                        第10章：浮动
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                            <b>2.11.</b>
                        
                        第11章：定位与渐变
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                            <b>2.12.</b>
                        
                        第12章：css过渡与变形
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                            <b>2.13.</b>
                        
                        第13章：css动画
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                            <b>2.14.</b>
                        
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                            <b>2.15.</b>
                        
                        第15章：swiper与地图插件
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                            <b>2.16.</b>
                        
                        第16章：移动端rem布局
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                            <b>2.17.</b>
                        
                        第17章：伸缩盒子
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                            <b>3.</b>
                        
                        sass简介
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                            <b>3.1.</b>
                        
                        第1章：sass安装与使用
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                            <b>3.2.</b>
                        
                        第2章：sass语法入门
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                            <b>4.</b>
                        
                        Bootstrap简介
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                            <b>4.1.</b>
                        
                        第1章：Bootstrap
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                            <b>5.</b>
                        
                        JavaScript简介
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                            <b>5.1.</b>
                        
                        第1章：JavaScript
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                            <b>5.2.</b>
                        
                        第2章：变量
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                            <b>5.3.</b>
                        
                        第3章：Number
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                            <b>5.4.</b>
                        
                        第4章：数据类型判断
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                            <b>5.5.</b>
                        
                        第5章：运算符与字符串
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                            <b>5.6.</b>
                        
                        第6章：循环与流程控制
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                            <b>5.7.</b>
                        
                        第7章：函数与作用域
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                            <b>5.8.</b>
                        
                        第8章：String方法
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                            <b>5.9.</b>
                        
                        第9章：数组方法
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                            <b>5.10.</b>
                        
                        第10章：定时器与排序
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                            <b>5.11.</b>
                        
                        第11章：Date与Math
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                            <b>5.12.</b>
                        
                        第12章：简单的DOM操作与垃圾回收
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                            <b>5.13.</b>
                        
                        第13章：DOM操作
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                            <b>5.14.</b>
                        
                        第14章：DOM修改样式
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                            <b>5.15.</b>
                        
                        第15章：DOM常用标签属性
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                            <b>5.16.</b>
                        
                        第16章：鼠标坐标与拖拽
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                        <h1 id="sass&#x8BED;&#x6CD5;&#x5165;&#x95E8;">sass&#x8BED;&#x6CD5;&#x5165;&#x95E8;</h1>
<h3 id="1&#x53D8;&#x91CF;">1.&#x53D8;&#x91CF;</h3>
<p>sass&#x4E2D;&#x53EF;&#x4EE5;&#x5B9A;&#x4E49;&#x53D8;&#x91CF;&#xFF0C;&#x65B9;&#x4FBF;&#x7EDF;&#x4E00;&#x4FEE;&#x6539;&#x548C;&#x7EF4;&#x62A4;&#x3002;</p>
<p>sass&#x4EE3;&#x7801;&#xFF1A;</p>
<pre><code>    $blue : #1875e7;&#x3000;
    div {
    &#x3000;color : $blue;
    }
</code></pre><p>&#x751F;&#x6210;&#x7684;css&#x4EE3;&#x7801;</p>
<pre><code class="lang-css">    <span class="hljs-tag">div</span> <span class="hljs-rules">{
    &#x3000;<span class="hljs-rule"><span class="hljs-attribute">color </span>:<span class="hljs-value"> <span class="hljs-hexcolor">#1875e7</span></span></span>;
    }</span>
</code></pre>
<p>&#x5982;&#x679C;&#x53D8;&#x91CF;&#x9700;&#x8981;&#x9576;&#x5D4C;&#x5728;&#x5B57;&#x7B26;&#x4E32;&#x4E4B;&#x4E2D;&#xFF0C;&#x5C31;&#x5FC5;&#x987B;&#x9700;&#x8981;&#x5199;&#x5728;#{}&#x4E4B;&#x4E2D;&#x3002;</p>
<pre><code>    $side : left;
    .rounded {
        border-#{$side}-radius: 5px;
    }
</code></pre><h3 id="2&#x5D4C;&#x5957;">2.&#x5D4C;&#x5957;</h3>
<p>sass&#x53EF;&#x4EE5;&#x8FDB;&#x884C;&#x9009;&#x62E9;&#x5668;&#x7684;&#x5D4C;&#x5957;&#xFF0C;&#x8868;&#x793A;&#x5C42;&#x7EA7;&#x5173;&#x7CFB;&#xFF0C;&#x770B;&#x8D77;&#x6765;&#x5F88;&#x4F18;&#x96C5;&#x6574;&#x9F50;&#x3002;</p>
<p>sass&#x4EE3;&#x7801;&#xFF1A;</p>
<pre><code>    nav {
      ul {
        margin: 0;
      }

      li { display: inline-block; }

      a {
        display: block;
      }
    }
</code></pre><p>&#x751F;&#x6210;&#x7684;css&#x4EE3;&#x7801;&#xFF1A;</p>
<pre><code>    nav ul {
      margin: 0;
    }
    nav li {
      display: inline-block;
    }
    nav a {
      display: block;
    }
</code></pre><p>&#x5C5E;&#x6027;&#x4E5F;&#x53EF;&#x4EE5;&#x5D4C;&#x5957;&#xFF0C;&#x6BD4;&#x5982;border-color&#x5C5E;&#x6027;&#xFF0C;&#x53EF;&#x4EE5;&#x5199;&#x6210;&#xFF1A;</p>
<pre><code>    p {
    &#x3000;&#x3000;&#x3000;border: {
    &#x3000;&#x3000;&#x3000;&#x3000;&#x3000;color: red;
    &#x3000;&#x3000;&#x3000;}
    &#x3000;}
</code></pre><pre><code>&#x6CE8;&#x610F;&#xFF0C;border&#x540E;&#x9762;&#x5FC5;&#x987B;&#x52A0;&#x4E0A;&#x5192;&#x53F7;&#x3002; &#x5728;&#x5D4C;&#x5957;&#x7684;&#x4EE3;&#x7801;&#x5757;&#x5185;&#xFF0C;&#x53EF;&#x4EE5;&#x4F7F;&#x7528;&amp;&#x5F15;&#x7528;&#x7236;&#x5143;&#x7D20;&#x3002;&#x6BD4;&#x5982;a:hover&#x4F2A;&#x7C7B;&#xFF0C;&#x53EF;&#x4EE5;&#x5199;&#x6210;&#xFF1A;
</code></pre><pre><code>    a {
    &#x3000;&#x3000;&#x3000;&amp;:hover { color: #ffb3ff; }
    &#x3000;}
</code></pre><h3 id="3&#x5BFC;&#x5165;">3.&#x5BFC;&#x5165;</h3>
<p>sass&#x4E2D;&#x5982;&#x5BFC;&#x5165;&#x5176;&#x4ED6;sass&#x6587;&#x4EF6;&#xFF0C;&#x6700;&#x540E;&#x7F16;&#x8BD1;&#x4E3A;&#x4E00;&#x4E2A;css&#x6587;&#x4EF6;&#xFF0C;&#x4F18;&#x4E8E;&#x7EAF;css&#x7684;@import&#x3002;&#x5176;&#x4E2D;&#x6CE8;&#x610F;&#x7684;&#x662F;&#x5982;&#x679C;sass&#x6587;&#x4EF6;&#x7684;&#x540D;&#x5B57;&#x4EE5;&#x201C;_&#x201D;&#x5F00;&#x5934;&#xFF0C;&#x5219;&#x4E0D;&#x4F1A;&#x88AB;&#x7F16;&#x8BD1;&#x6210;css&#x6587;&#x4EF6;</p>
<p>reset.scss&#x6587;&#x4EF6;&#xFF1A;</p>
<pre><code>    html,
    body,
    ul,
    ol {
       margin: 0;
      padding: 0;
    }
</code></pre><p>base.scss&#x6587;&#x4EF6;&#xFF1A;</p>
<pre><code>    @import &apos;reset&apos;;

    body {
      font-size: 100% Helvetica, sans-serif;
      background-color: #efefef;
    }
</code></pre><p>&#x6700;&#x7EC8;&#x751F;&#x6210;&#x7684;css:</p>
<pre><code>    html, body, ul, ol {
      margin: 0;
      padding: 0;
    }
    body {
      background-color: #efefef;
      font-size: 100% Helvetica, sans-serif;
    }
</code></pre><h3 id="4mixin&#xFF08;&#x53EF;&#x4EE5;&#x91CD;&#x7528;&#x7684;&#x4EE3;&#x7801;&#x5757;&#xFF09;">4.mixin&#xFF08;&#x53EF;&#x4EE5;&#x91CD;&#x7528;&#x7684;&#x4EE3;&#x7801;&#x5757;&#xFF09;</h3>
<pre><code>    @mixin left {
        float: left;
        margin-left: 10px;
    }
</code></pre><p>&#x4F7F;&#x7528;@include&#x547D;&#x4EE4;&#xFF0C;&#x8C03;&#x7528;&#x8FD9;&#x4E2A;mixin&#x3002;</p>
<pre><code>    div {
    &#x3000;&#x3000;&#x3000;@include left;
    }
</code></pre><p>mixin&#x7684;&#x5F3A;&#x5927;&#x4E4B;&#x5904;&#xFF0C;&#x5728;&#x4E8E;&#x53EF;&#x4EE5;&#x6307;&#x5B9A;&#x53C2;&#x6570;&#x548C;&#x7F3A;&#x7701;&#x503C;&#x3002;</p>
<pre><code>    @mixin left($value: 10px) {
    &#x3000;&#x3000;&#x3000;float: left;
    &#x3000;&#x3000;&#x3000;margin-right: $value;
    &#x3000;}
</code></pre><h3 id="5&#x6269;&#x5C55;&#x7EE7;&#x627F;">5.&#x6269;&#x5C55;/&#x7EE7;&#x627F;</h3>
<p>sass&#x53EF;&#x901A;&#x8FC7;@extend&#x6765;&#x5B9E;&#x73B0;&#x4EE3;&#x7801;&#x7EC4;&#x5408;&#x58F0;&#x660E;&#xFF0C;&#x4F7F;&#x4EE3;&#x7801;&#x66F4;&#x52A0;&#x4F18;&#x8D8A;&#x7B80;&#x6D01;&#x3002;</p>
<p>sass:</p>
<pre><code>    .message {
      border: 1px solid #ccc;
      padding: 10px;
      color: #333;
    }

    .success {
      @extend .message;
      border-color: green;
    }

    .error {
      @extend .message;
      border-color: red;
    }

    .warning {
      @extend .message;
      border-color: yellow;
    }
</code></pre><p>&#x751F;&#x6210;&#x7684;css:</p>
<pre><code>    .message, .success, .error, .warning {
      border: 1px solid #cccccc;
      padding: 10px;
      color: #333;
    }

    .success {
      border-color: green;
    }

    .error {
      border-color: red;
    }

    .warning {
      border-color: yellow;
    }
</code></pre><h3 id="6&#x8FD0;&#x7B97;">6.&#x8FD0;&#x7B97;</h3>
<p>sass&#x53EF;&#x8FDB;&#x884C;&#x7B80;&#x5355;&#x7684;&#x52A0;&#x51CF;&#x4E58;&#x9664;&#x8FD0;&#x7B97;&#x7B49;</p>
<p>sass:</p>
<pre><code>    $var:100px;
    div {
    &#x3000;&#x3000;&#x3000;&#x3000;margin: (14px/2);
    &#x3000;&#x3000;&#x3000;&#x3000;top: 50px + 100px;
    &#x3000;&#x3000;&#x3000;&#x3000;right: $var * 0.5;
    &#x3000;&#x3000;}
</code></pre><p>&#x751F;&#x6210;&#x7684;css:</p>
<pre><code>    div {
    &#x3000;&#x3000;&#x3000;&#x3000;margin: 7px;
    &#x3000;&#x3000;&#x3000;&#x3000;top: 150px;
    &#x3000;&#x3000;&#x3000;&#x3000;right: 50px;
    &#x3000;&#x3000;}
</code></pre><h3 id="7-&#x81EA;&#x5B9A;&#x4E49;&#x51FD;&#x6570;">7. &#x81EA;&#x5B9A;&#x4E49;&#x51FD;&#x6570;</h3>
<p>SASS&#x5141;&#x8BB8;&#x7528;&#x6237;&#x7F16;&#x5199;&#x81EA;&#x5DF1;&#x7684;&#x51FD;&#x6570;&#x3002;</p>
<pre><code>    @function double($n) {
    &#x3000;&#x3000;@return $n * 2;
    }
    #sidebar {
    &#x3000;&#x3000;width: double(5px);
    }
</code></pre><p>&#x751F;&#x6210;&#x7684;css:</p>
<pre><code>    #sidebar {
    &#x3000;&#x3000;width: 10px;
    }
</code></pre><p>&#x5982;&#x679C;&#x8981;&#x8FD4;&#x56DE;&#x5B57;&#x7B26;&#x4E32;&#xFF0C;&#x53EF;&#x4EE5;&#x8FD9;&#x6837;&#x5199;</p>
<pre><code>    @function myurl($url){
        @return &quot;../#{$url}&quot;;   //&#x8FD4;&#x56DE;&#x4E00;&#x4E2A;&#x62FC;&#x63A5;&#x7684;&#x65B0;&#x5730;&#x5740;
    }
    body{
        background-image: url(myurl(images/bg.jpg)); 
    }
</code></pre><p>&#x751F;&#x6210;&#x7684;css:</p>
<pre><code>    body {
      background-image: url(&quot;../images/bg.jpg&quot;); }
</code></pre>
                    
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